I. Applicable Corrosion-Protection Standards
ISO 12944-2 and GB/T 30790.2-2014
II. Types of Corrosion Protection
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Sendzimir continuous hot-dip galvanized steel
Zinc coating weight: 80–275 g/m²
Zinc coating thickness: 5.6–19.3 μm
1 μm = 7.14 g/m² -
Hot-dip galvanizing in accordance with ISO 1461 after component fabrication
Zinc coating weight: 464–607 g/m²
Zinc coating thickness: 65–85 μm
1 μm = 7.14 g/m² -
Aluminum alloy or stainless steel, grade SS 304 or SS 316
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Epoxy powder coating
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Hot-dip galvanizing plus epoxy powder coating
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Typical environments and recommended corrosion-protection methods
| Corrosivity Category | Typical Environment | Recommended Surface Treatment |
| C1 | Dry indoor environments | Pre-Galvanized Steel |
| C2 | Warehouses / light industrial buildings | Pre-Galvanized Steel |
| C3 | Humid industrial or light coastal areas | Hot-Dip Galvanized ≥65μm |
| C4 | Chemical plants / coastal environments | Hot-Dip Galvanized ≥85μm |
| C5 | High humidity / salt mist / aggressive industrial areas | Hot-Dip Galvanized ≥85μm + Powder Coating |
| CX / C5+ | Offshore / marine / extreme corrosion environments | AISI 316L Stainless Steel |
